For the last couple weeks I have been having trouble getting my ATI Radeon to work in FC3. Regardless of how I tried to install the drivers or which drivers I used I would run into issues like the following:
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual!
With my frustrations peaking a brilliant user over at yoper.com posted the following suggestion that solved my problem and as a result I wanted to share it with everyone here....
Once you have installed the ATI driver, you need to edit your X configuration file to enable the acceleration. In your /etc/X11/Xfree86Config file ( it may be XFree86Config-4 depending on Yoper version etc) , you need to edit the line which says-
Load "glx"
by replacing it with -
Load "/usr/X11R6/lib/modules/extensions/libglx.a"
In the case of FC3 the file to edit is /etc/X11/xorg.conf...
Hope this helps out other frustrated people!